Millions of used electric car batteries will help store energy for the grid. Maybe. by David Roberts. Aug 29, 2016, 12:30 PM UTC (Shutterstock) Once or ...

Used batteries from plug-in electric vehicles could help California meet its goals for energy storage, a report from the University of California, Los Angeles, and UC Berkeley law schools said.

Battery packs can store energy generated by renewable sources for later use, or act as a limited backup power source. DON'T MISS: BMW electric-car batteries to be used as home energy-storage devices.

It also stores batteries. Lots of them. SNT’s main warehouse in Oklahoma City holds hundreds of electric car batteries, stacked on shelves that jut 30 feet into the air.

Used car batteries cannot be thrown away in ordinary trash. Robin Gentry / EyeEm/Getty Images If you change a car battery yourself, remember that they cannot be thrown away in ordinary trash.

Auto parts stores pay $10 to $80 for old cores, even if you don't buy a new part. A leaky battery destroys everything, so wrap it in heavy plastic. Where it goes: Rebuilt and reused.

We present the best car batteries for the money in seven different sizes: Group 24/24F, Group 35, Group 47 (H5), Group 48 (H6), Group 49 (H8), Group 51R, and Group 65.These numbers indicate size ...